Combined air and gas admission valve for explosive-engines.



PATENTED MAR. 12, 1907.

H. LENTZ. GOMBINED AIR AND GAS ADMISSION VALVE FOR EXPLOSIVB ENGINES.

' APPLICATION FILED DEC. 22, 1905.

2 SHEETS+BHEET l.

Fig. IV

Fig-.2"

w/r/vfssts rromvms:

ge-62W PATENTED MAR. 12, 1907.

I H; LENTZ. COMBINED AIR AND GAS ADMISSION VALVE FOR BXBLOSIVE ENGINES.

APPLICATION FILED D3122, 1905.

2' SHEETSSHEBT 2.

Fig.4

8 1% m mm 1 v M u Z f a.

2 7/ M, Mm a -.L 4W R Win 33m r %;/A.

a subject of Berlin, Germany,

HUGO LENTZ,. or BERLIN. GERMANY. J COMBINED AlR AND GAS ADMISSION-VALVEFOR, EXPLOQIVEENGINES.

Specification of Letters Patent;

Patented March 12. 1907.

Application filed iDece nber 22,1905. Serial llo. 292.964.

To all whom' it may concern:

Be it known that I, Hooo LEN'r-z, engineer, iwith any lift "of the,valvean explosive mixt-he German Empire, residing at ture of invariable haveinvented new and? geous to depart from the rule generally In orderthatit may be possible to obtain' composition, it is advantszusefulImprovements in and Relating to Dis- I adopted,'cons1sting in givingtothe horizontributing Members for Explosibn,Motors, of i talpassage-sections of the valve surfaces proportionate t the volumes ofthe components I of the mixture and to give to the valve diwhich thefollowing'is a'full, clear, andexact description.

This invention relates to admission-valves of explosion orinternal-combustion engines mixture ofair and gas or hydrocarbon vapors;and the object of the in-' vention isto provide an admission-valve con-isisting of a smglememher'combmmg n one part the air and gas admissionvalves.

One ofthe special features of the invention also consists-in giving tothe combined admission-valve and toits seats forms which byway ofexample'these-two valves are here The lower seat c 'invention. 'Fig. 3shows joints the seat of the insure theconstancy of'the mixture underthe best conditions whatever the lift of this valve may be.

In the accompanying drawing, Figures 1 "and 2 are two sections,"in'elevation and in respectively, of a constructional form of plan, theadmission member in accordancewith this another constructional form'ofthis part. Fig. 4 is identical with Fig. 3, except that in it the valveis shown lifted from itsseat.

4 The admissionmember according to this invention is characterized bythe fact that,

on the one,hand,:in order to permit of the operation of this part, withan exceedingly small lift the air-valve is lven a tubular form with]double seat by com ining it With'the gas-admission valve, and, on theother hand, for the purpose of obviating thefharmful effect of unequalexpansions upon the tightness of the as-valve ,is' arrangedapproximately in theplane of the lower seat of the air-valve.

Air-exceedingly simple means for combining thejair'and gas valves''consists in casting themtogether,

I InfFig..1', a designates-theftubnlizrdouble-seated air-valve,';and bthe gas valve, and

united in a single-castingof'the airvalve is situated in the as the seat(Lof the gas-valve. The boss or hub; e of this combined double-seatedvalve, which hub serves for its attachment to the valve-rod s, atthesame time serves as the gas-valve.

the. hubof thedouble tubular. air-valve then servingas, a plate-valvefor the of'the two seats of the air-valve .are to the- I 1 the volume ofair is to the volume of gas in the mixture. The various magnitudes ofthe lifts of the valve do not in thiscase in any wayvary the Theymerely'alter the quantity of the mix-. ture admitted- If, however,circumstances render it; necessary to give to the horizontalpassage-sections values corresponding to the proportions of the.mixture, the same ratio of the sections of the ports would be obtainedby reducing the lift of one of the valves. This condition is realized'inthe most simple manner by surrounding the gas valve with a flange orcollar f, the'section of which is such that'the' section of the port thegas remains,

giving accesszto. for all possible lifts of the contour of the gas-valvein the same ratio as proportions of the mixture.

valve, proportionate to the total section of the port of theair-valve,Fig. 3. The flange or collar f, shown in Figs. 3 and 4 as being cast inone piece with the valve-seat, may

also be made as an interchangeable conical ring-- 1t 1s possible tolargely diminish the effort required by'the distributing-gear'by adopt-'ing [for the admission-seat of the valve the constructional -formrepresented-in Fig. 4.

The connected seat cast with the valve then turned in the lathe permitsof introducing a valve the two seats of which present the same diameterperfectly balanced, or else with the inner seat larger than the outerseat. In these figures the air amigas admission sockets are designatedby i. and 2, respectively. The advantages of these'methods ofconstructing the admission member are as follows: This double member .ina single piece operates with small liftsf and all its parts are actedupon in the same manner by the governor; the employment of theslidevalve, with ports andcombine'd" with the id- 'ission valve, whichis but iii-adapted for this purpose, is dispensed with; all thevariations of the admission-sections are formed y" t with differentlifts of the valvere- ICO fire

sulting, for example, from the action of the governortheadmission-sections for the gas and air remain proportionate to theconstituents of the mixture; expansions produced by heat exert noinfluence upon the tightness of the gas-valve, and, finally, the

pressure of the gas which is produced during the explosion invariablytends to close the valve, wherebytlie initial load of the valveclos ingsprings isreduced and the safety of working is increased, 7 v

f In the case'of a motor with suction gasgenerator for the purpose ofpermitting of the certaine the nature of my invention and in seat of thelatter is approximately'or comwhat -manner it may be performed, Ideclare thatwhat I claim is e 1. An admission member forexplosion-motors consisting of a tubular double-seated valve, serving asair-valve, in combination with the gas-valve in such a manner that thepletely in the corresponding plane of the seat of the air-valve. v

2. An admission member for explosion-motors consisting of a tubulardouble-seated valve, serving as air-valve, in combination with and castin one piece with the gas-valve, in such a manner that the hub of thedoubleseated valve serves at the same time as gasvalve.

3. An admission member for explosion-mos tors consisting of a tubulardouble-seated valve, serving as air-valve, in combination with and castin one piece with the gas-valve, in such a manner that the ratio betweenthe contour of the gas-valve, and the-sum of the contours of the seatsof the air-valve, ,corre sponds to the ratio of the volumes of theconstituents of the explosive mixture. 4. An admission m'emberforexplosion-motors consisting ofa tubular double -seatedvalve, serving asair-valve, in combination with and cast in one piece with the gas-valve,

zontal passage-sections of the air and gas valves are proportional tothe ratio of the in such a manner that the surfaces of the hori-lvolumes of the constituents-of the explosive mixture.

5. An admission member for explosionmo tors consisting of 'a' tubulardouble-seated valve, serving as air-valve,-in combination with andvcastin one piece with the gas-valve,

in such a manner that the surfaces of the hori- .zontal passage-sectionsof the air and gas valve are proportional to the ratio of the vol-' umesof the constituents of, the explosive mixture, the gas-valve beingsurrounded by a collar of appropriate cross-'section'in order tomalntainconstant the ratio of the passages a to the ports'. 7

6. In a gas-engine, the combination of a tubular double-seated air-inletvalve, a gasvalve coa'cting therewith, and seats for the valves lying inapproximately the; same plane. o

7. In a gas-engine, the combination of a tubular inlet-valve, twoannular seats with which the ends of said valve respectively coact, agas-valve supported within and centrally coincident to the air-inletvalve, and a seat with which the gas-valve coacts, the gasvalve seat andone seat of the air-inlet valve being in approximately the same plane.

In testimony whereof I have hereunto placed my hand, 'at Berlin, this7th day of December, 1905, a i v p HUGO LENTZ. In presence of HENRYHASPER, IWOLDEMAR HAUPT.

